cols_add.md
In gt: Easily Create Presentation-Ready Display Tables

cols_add() errors with bad input

Code
  cols_add(tbl, x = 1, .after = 2, .before = 3)
Condition
  Error in `cols_add()`:
  ! Expressions cannot be given to both `.before` and `.after`.
Code
  cols_add(tbl, x = 1, .after = 15)
Condition
  Error in `vars_select_eval()`:
  ! Can't select columns past the end.
  i Location 15 doesn't exist.
  i There are only 9 columns.
Code
  cols_add(tbl, x = 1, .before = c(1, 2))
Condition
  Error in `cols_add()`:
  ! The expression used for `.before` resolved multiple columns.
Code
  cols_add(tbl, x = 1, .after = c(1, 2))
Condition
  Error in `cols_add()`:
  ! The expression used for `.after` resolved multiple columns.